[PSUBS-MAILIST] Thruster

[Rick Patton via Personal_Submersibles]

I was hoping that Alec was going to chime in as he had told me on a phone
conversation a while ago that his air comp system had failed a little and
had let some water into I believe his thrusters and accuators for the arm??
Alec, I hope I am not misquoting you. Let us know what you experienced.
Hank and Alan, let me know as soon as you can when you have some results on
your LP regulators.
I have been sailing down the East coast from Virginia about 3 months ago
hitting all the little places and larg as we go and our final destination
was the Bahamas but as we were about an hour away from making landfall, I
fell and broke my leg in the cockpit so when we got to the marina, we
ubered to the hospital and they had to put 2 screws into the top of the
Tibea so we found a place to store the boat and flew 6,000 miles away from
the Bahamas back to Hawaii to rehab the leg. 😬

I am probably (I hate guessing when it comes to launch times) about 3
months away from doing her first dunk to get her trimmed out. I can't wait
because as you know, the vis is real good here and can see things coming
sooner than later. The barge company that transports all materials from the
mainland to the Islands lost about 14 shipping containers just before it
pulled into the port of Hilo and they drifted for a bit then sunk so I am
going to see if I can find any of them. I called the insurance company who
now owns them and they didn't really seem to care if I retrieved any of
them or not. A small barge and a boom truck and I am in business.
Rick

On Tue, Feb 7, 2023 at 2:37 PM hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Rick,
> Are you compensating the thrusters and arm from the same regulator?  I
> would caution you on doing that.  I have a theory that putting multiple
> items on one scuba regulator will not work if there is any distance between
> items.  My arm as I mentioned is working well with the scuba reg because it
> is literally a few inches from the manifold.  The hose connecting the reg
> to the manifold is 1\2 inch ID.  This is the reason I am testing  an LP
> regulator, because I can create as much over pressure as needed to help
> with distance between items.   I agree with Alan, that the water should not
> get to the motors on the surface, particularly if you have some vertical
> line right off the reg.
> It is sounding like there will be a launch soon?
> Hank
>
> On Tuesday, February 7, 2023, 03:59:36 PM MST, Rick Patton via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Alan, My second stage is located as low as possible but Alec has the same
> exact "I followed his design" system and he said that he had gotten some
> water in the thrusters as well as the accuators, plus I was thinking that
> the force of water being as dense as it is would force it's way down the
> tube as the water burbles over and around the mouth piece and there is no
> resistance in the lines or housings to prevent that as they are at one atm.
>
> Rick
>
> On Tue, Feb 7, 2023 at 12:26 PM Alan James via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Rick,
> I thought you said that your second stage regulator was lower than your
> thrusters. How is the water going to get in to them? The exhaust valves on
> the second stage should keep the water out of the system; however I did add
> an extension to the exhaust port on mine, just to make sure.
> I have advised at various times to use octopus regulators that are less
> prone to free flowing.
> One problem I can see is that the exhaust valves may suck open with the
> water flowing past them while towing. But even if they did, with the
> thrusters higher than the regulator you shouldn't get any water in.
> However I am building a better over-pressure system.
> Alan
>
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>
> On Wed, 8 Feb 2023 at 11:07 am, Rick Patton via Personal_Submersibles
> <personal_submersibles at psubs.org> wrote:
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